include/linux/reboot.h

   1 #ifndef _LINUX_REBOOT_H
   2 #define _LINUX_REBOOT_H
   3
   4 /*
   5  * Magic values required to use _reboot() system call.
   6  */
   7
   8 #define LINUX_REBOOT_MAGIC1     0xfee1dead
   9 #define LINUX_REBOOT_MAGIC2     672274793
  10 #define LINUX_REBOOT_MAGIC2A    85072278
  11 #define LINUX_REBOOT_MAGIC2B    369367448
  12 #define LINUX_REBOOT_MAGIC2C    537993216
  13
  14
  15 /*
  16  * Commands accepted by the _reboot() system call.
  17  *
  18  * RESTART     Restart system using default command and mode.
  19  * HALT        Stop OS and give system control to ROM monitor, if any.
  20  * CAD_ON      Ctrl-Alt-Del sequence causes RESTART command.
  21  * CAD_OFF     Ctrl-Alt-Del sequence sends SIGINT to init task.
  22  * POWER_OFF   Stop OS and remove all power from system, if possible.
  23  * RESTART2    Restart system using given command string.
  24  * SW_SUSPEND  Suspend system using software suspend if compiled in.
  25  */
  26
  27 #define LINUX_REBOOT_CMD_RESTART        0x01234567
  28 #define LINUX_REBOOT_CMD_HALT           0xCDEF0123
  29 #define LINUX_REBOOT_CMD_CAD_ON         0x89ABCDEF
  30 #define LINUX_REBOOT_CMD_CAD_OFF        0x00000000
  31 #define LINUX_REBOOT_CMD_POWER_OFF      0x4321FEDC
  32 #define LINUX_REBOOT_CMD_RESTART2       0xA1B2C3D4
  33 #define LINUX_REBOOT_CMD_SW_SUSPEND     0xD000FCE2
  34
  35
  36 #ifdef __KERNEL__
  37
  38 #include <linux/notifier.h>
  39
  40 extern int register_reboot_notifier(struct notifier_block *);
  41 extern int unregister_reboot_notifier(struct notifier_block *);
  42
  43
  44 /*
  45  * Architecture-specific implementations of sys_reboot commands.
  46  */
  47
  48 extern void machine_restart(char *cmd);
  49 extern void machine_halt(void);
  50 extern void machine_power_off(void);
  51
  52 #endif
  53
  54 #endif /* _LINUX_REBOOT_H */